Node.js is required for using many JavaScript tools and for creating server-side JavaScript applications. Here is how you install Node.js on a Mac.

The first thing you should do is check to see if you have a version of Node.js already installed. To do that:

Not only for node.js, but a powerful tool that every developer on Mac OS should have or have heard of: homebrew. So head on and install it, because it allows you to install node.js with one command (Terminal phobics, don’t worry, it’s short!) and gets you going on setting up your testing environment.

1. Open the Terminal by pressing Command+Space to open Spotlight Search and entering Terminal then pressing Enter.
2. Enter node - v in the Terminal and press Enter.
3. If you do have Node.js installed, it will output the version.
   1. Update to the latest version using npm i -g npm. If you get a bunch of checkPermissions warnings, you should run the command as the superuser like this: sudo npm i -g npm
   2. You now have the latest version installed. You do not need to continue with these instructions.
4. If you do not have Node.js installed, it will output something like -bash: node: command not found. Continue with these instructions to install it.
5. Go to nodejs.org. You'll see download links for MacOS. If you are using Node.js for a Webucator class, you should select the LTS version. The Current version has the latest features, but may be more prone to changes and bugs than the LTS (Long Term Support) version.
6. When the file finishes downloading, locate it in Finder and double-click on it.
7. Go through the entire installation process.
   
8. When installation is complete, open the Terminal by pressing Command+Space to open Spotlight Search and entering Terminal then pressing Enter.
9. Enter node - v in the Terminal to verify that Node.js is installed correctly and to see the version of Node.js that was installed.

Node Js Download For Mac Os

If a version was output, then you're all set.